GA/T 1934-2021 GC-MS, LC and LC-MS methods for testing of 6 ephedrine-like substances including norephedrine in suspected precursor chemicals in forensic science (English Version)
2021GA/T 1934-2021 GC-MS, LC and LC-MS methods for testing of 6 ephedrine-like substances including norephedrine in suspected precursor chemicals in forensic science